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lpac/docs/ENVVARS.md
Frans Klaver 5987dfa815
driver: apdu: add MBIM backend (#166) 
Add an APDU backend for MBIM devices.

The MBIM device path can be passed via the MBIM_DEVICE environment
variable. We'll default to /dev/cdc-wdm0.

By default we will not operate through the mbim-proxy. Set
MBIM_USE_PROXY to 1 to enable this.

Like QMI devices, use UIM_PORT to select the active SIM slot.

Tested on Semtech EM9191 and EM7590, and Quectel RM520N-GL.

resolve #94

Signed-off-by: Frans Klaver <frans.klaver@vislink.com>
Co-authored-by: Frans Klaver <frans.klaver@vislink.com>
2024-11-16 22:43:29 +08:00

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Environment Variables

General

  • LPAC_APDU: specify which APDU backend will be used. Values:
    • at: use AT commands interface used by LTE module
    • pcsc: use PC/SC Smart Card API
    • stdio: use standard input/output
    • qmi: use QMI
    • qmi_qrtr: use QMI over QRTR
    • mbim: use MBIM
    • GBinder-based backends for libhybris (Halium) distributions:
      • gbinder_hidl: use HIDL IRadio (SoC launched before Android 13)
  • LPAC_HTTP: specify which HTTP backend will be used.
    • curl: use libcurl
    • stdio: use standard input/ouput
  • AT_DEVICE: specify which serial port device will be used by AT APDU backend.
  • QMI_DEVICE: specify which QMI device will be used by QMI APDU backend.
  • UIM_SLOT: specify which UIM slot will be used by QMI and MBIM APDU backends. (default: 1, slot number starts from 1)
  • DRIVER_IFID: specify which PC/SC interface will be used by PC/SC APDU backend.
  • MBIM_DEVICE: specify which MBIM device will be used by MBIM APDU backend. (default: "/dev/cdc-wdm0")
  • MBIM_USE_PROXY: tell the MBIM APDU backend to use the mbim-proxy. (default: 0, anything other than 0 means true)

Debug

  • LIBEUICC_DEBUG_APDU: enable debug output for APDU.
  • LIBEUICC_DEBUG_HTTP: enable debug output for HTTP.
  • AT_DEBUG: enable debug output for AT APDU backend.
  • GBINDER_APDU_DEBUG: enable debug output for GBinder APDU backend. MUST be true to take effect.